20667790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{149}}^1$

素因数の和:277

約数の個数: 64

約数和(自身を含む): 44452800

約数和(自身を除く): 23785010

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 97, 110, 130, 143, 149, 194, 286, 298, 485, 715, 745, 970, 1067, 1261, 1430, 1490, 1639, 1937, 2134, 2522, 3278, 3874, 5335, 6305, 8195, 9685, 10670, 12610, 13871, 14453, 16390, 19370, 21307, 27742, 28906, 42614, 69355, 72265, 106535, 138710, 144530, 158983, 187889, 213070, 317966, 375778, 794915, 939445, 1589830, 1878890, 2066779, 4133558, 10333895, 20667790]

約数ペア:

[(1, 20667790), (2, 10333895), (5, 4133558), (10, 2066779), (11, 1878890), (13, 1589830), (22, 939445), (26, 794915), (55, 375778), (65, 317966), (97, 213070), (110, 187889), (130, 158983), (143, 144530), (149, 138710), (194, 106535), (286, 72265), (298, 69355), (485, 42614), (715, 28906), (745, 27742), (970, 21307), (1067, 19370), (1261, 16390), (1430, 14453), (1490, 13871), (1639, 12610), (1937, 10670), (2134, 9685), (2522, 8195), (3278, 6305), (3874, 5335)]